Chain tool



FIG. 1 is a left side perspective view of a chain tool showing the newdesign;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a rear view thereof; and,

FIG. 7 is front view thereof.

CLAIM The ornamental design for a chain tool, as shown and described.